{"id":31286,"date":"2023-08-30T07:00:24","date_gmt":"2023-07-08T15:33:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%90%e6%95%b0%e7%bb%84%c2%b7%e5%88%97%e8%a1%a8%e3%80%91\/"},"modified":"2025-08-12T23:14:59","modified_gmt":"2025-08-12T15:14:59","slug":"java%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%90%e6%95%b0%e7%bb%84%c2%b7%e5%88%97%e8%a1%a8%e3%80%91","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java%e7%9a%84%e5%a4%87%e5%bf%98%e5%bd%95%e3%80%90%e6%95%b0%e7%bb%84%c2%b7%e5%88%97%e8%a1%a8%e3%80%91\/","title":{"rendered":"Java\u7684\u5907\u5fd8\u5f55\u3010\u6570\u7ec4\u00b7\u5217\u8868\u3011"},"content":{"rendered":"<h1>\u7b80\u800c\u8a00\u4e4b\u6211\u5728\u7f16\u5199\u7a0b\u5e8f\u65f6\u6574\u7406\u4e86\u6709\u5173\u5217\u8868\u5b58\u50a8\u65b9\u5f0f\u7684\u5185\u5bb9\u3002<\/p>\n<h2>\u4f7f\u7528\u6570\u7ec4\u6765\u5b58\u50a8\u7684\u65b9\u6cd5<\/p>\n<div>\u8bbe\u5b9a\u5728\u521d\u59cb\u5316\u6570\u7ec4\u65f6\u8981\u5b58\u50a8\u7684\u6570\u91cf<br \/>\n\u5c06\u503c\u8d4b\u7ed9\u6570\u7ec4\u7684\u5143\u7d20<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">array1<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n   <span class=\"c1\">\/\/\u914d\u5217\u3092\u6e96\u5099<\/span>\r\n   <span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[<\/span><span class=\"mi\">3<\/span><span class=\"o\">];<\/span>\r\n\r\n   <span class=\"c1\">\/\/\u914d\u5217\u306e\u8981\u7d20\u306b\u5024\u3092\u4ee3\u5165<\/span>\r\n   <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52171\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n   <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">1<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52172\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n   <span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">2<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52173\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n   \t\r\n   <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">1<\/span><span class=\"o\">]);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"n\">\u914d\u52172\u756a\u76ee<\/span>\r\n<\/code><\/pre>\n<h2>\u5229\u7528\u914d\u5217\u8fdb\u884c\u5b58\u50a8\u7684\u65b9\u6cd52\u3002<\/p>\n<div>\u5728\u521d\u59cb\u5316\u6570\u7ec4\u65f6\u8bbe\u7f6e\u8981\u5b58\u50a8\u7684\u5143\u7d20<br \/>\n\u65e0\u9700\u8bbe\u7f6e\u6570\u7ec4\u7684\u4e2a\u6570<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">public<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">array2<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n   <span class=\"c1\">\/\/\u914d\u5217\u3092\u6e96\u5099<\/span>\r\n   <span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"o\">{<\/span>\r\n       <span class=\"s\">\"\u914d\u52171\u756a\u76ee\"<\/span><span class=\"o\">,<\/span>\r\n       <span class=\"s\">\"\u914d\u52172\u756a\u76ee\"<\/span><span class=\"o\">,<\/span>\r\n       <span class=\"s\">\"\u914d\u52173\u756a\u76ee\"<\/span><span class=\"o\">,<\/span>\r\n   <span class=\"o\">};<\/span>\r\n   <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">1<\/span><span class=\"o\">]);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"n\">\u914d\u52172\u756a\u76ee<\/span>\r\n<\/code><\/pre>\n<h2>3. \u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5217\u8868\u7684\u65b9\u6cd5 de<\/p>\n<div>\u8bbe\u5b9a\u5728\u521d\u59cb\u5316\u6570\u7ec4\u65f6\u5b58\u50a8\u7684\u6570\u91cf<br \/>\n\u4ece\u6570\u7ec4\u8f6c\u6362\u6210\u5217\u8868\u7c7b\u578b\uff08ArryList\uff09<br \/>\n\u901a\u8fc7ArryList\u7c7b\u578b\u5c06\u5143\u7d20\u6dfb\u52a0\u5230\u5217\u8868\u4e2d<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">listTask02<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"c1\">\/\/\u914d\u5217\u3092\u6e96\u5099<\/span>\r\n\t<span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">String<\/span><span class=\"o\">[<\/span><span class=\"mi\">3<\/span><span class=\"o\">];<\/span>\r\n\t<span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52171\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n\t<span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">1<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52172\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n\t<span class=\"n\">array<\/span><span class=\"o\">[<\/span><span class=\"mi\">2<\/span><span class=\"o\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"\u914d\u52173\u756a\u76ee\"<\/span><span class=\"o\">;<\/span>\r\n\t\t\r\n\t<span class=\"c1\">\/\/ \u914d\u5217\u304b\u3089\u30ea\u30b9\u30c8\u3078\u5909\u63db<\/span>\r\n\t<span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">listStrings<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;&gt;(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"n\">array<\/span><span class=\"o\">));<\/span>\r\n\t\t\r\n\t<span class=\"c1\">\/\/ \u30ea\u30b9\u30c8\u578b\u306b\u8ffd\u52a0<\/span>\r\n\t<span class=\"n\">listStrings<\/span><span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u8ffd\u52a0:\u914d\u52174\u756a\u76ee\"<\/span><span class=\"o\">);<\/span>\r\n\t\t\r\n\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">listStrings<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"mi\">0<\/span><span class=\"o\">));<\/span>\r\n\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">listStrings<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"mi\">3<\/span><span class=\"o\">));<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"n\">\u914d\u52171\u756a\u76ee<\/span>\r\n<span class=\"nl\">\u8ffd\u52a0:<\/span><span class=\"n\">\u914d\u52174\u756a\u76ee<\/span>\r\n<\/code><\/pre>\n<h2>\u4e00\u6b21\u6027\u5b58\u50a8\u5230\u5217\u8868\u7684\u65b9\u6cd5\u662f\u4ec0\u4e48\uff1f<\/p>\n<div>\n<p>\u58f0\u660e\u4e00\u4e2a\u5177\u6709\u5b57\u7b26\u4e32\u7c7b\u578b\u5143\u7d20\u7684ArrayList\u7c7b\u578b<\/p>\n<p>\u521b\u5efa\u4e00\u4e2a\u4ee5\u6307\u5b9a\u5143\u7d20\u521d\u59cb\u5316\u7684\u5217\u8868<\/p>\n<p>\u8f93\u51fa\u6307\u5b9a\u5143\u7d20<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">listTask03<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n\t\t\r\n\t<span class=\"c1\">\/\/\u30ea\u30b9\u30c8\u306e\u4f5c\u6210<\/span>\r\n\t<span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">listStr<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;&gt;(<\/span>\r\n                             <span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u914d\u52171\"<\/span><span class=\"o\">,<\/span><span class=\"s\">\"\u914d\u52172\"<\/span><span class=\"o\">,<\/span><span class=\"s\">\"\u914d\u52173\"<\/span><span class=\"o\">));<\/span>\r\n\t\t\r\n\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">listStr<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">));<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"n\">\u914d\u52172<\/span>\r\n<\/code><\/pre>\n<h2>5. \u5730\u56fe\u7684\u50a8\u5b58\u65b9\u5f0f<\/p>\n<div>\u4f7f\u7528HashMap\u5c06\u952e\u503c\u5bf9\u6dfb\u52a0\u5230\u6620\u5c04\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">mapTask04<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"nc\">Map<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span> <span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">map<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">HashMap<\/span><span class=\"o\">&lt;&gt;();<\/span>\r\n\t\t\r\n\t<span class=\"c1\">\/\/ \u30ad\u30fc\u3068\u5024\u306e\u30da\u30a2\u3092\u8ffd\u52a0<\/span>\r\n\t<span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"s\">\"a\"<\/span><span class=\"o\">,<\/span> <span class=\"mi\">1<\/span><span class=\"o\">);<\/span>\r\n\t<span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"s\">\"b\"<\/span><span class=\"o\">,<\/span> <span class=\"mi\">2<\/span><span class=\"o\">);<\/span>\r\n\t<span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"s\">\"c\"<\/span><span class=\"o\">,<\/span> <span class=\"mi\">3<\/span><span class=\"o\">);<\/span>\r\n\t\t\r\n\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">map<\/span><span class=\"o\">);<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"o\">{<\/span><span class=\"n\">a<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"o\">,<\/span> <span class=\"n\">b<\/span><span class=\"o\">=<\/span><span class=\"mi\">2<\/span><span class=\"o\">,<\/span> <span class=\"n\">c<\/span><span class=\"o\">=<\/span><span class=\"mi\">3<\/span><span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h2>6. \u4f7f\u7528\u5730\u56fe\u5b58\u50a8\u5217\u8868<\/p>\n<div>\n<p>\u4f7f\u7528HashMap\uff0c\u5728\u6620\u5c04\u4e2d\u6dfb\u52a0\u952e\u548c\u503c\u4e3a\u6574\u6570\u7c7b\u578b\u5217\u8868\u7684\u914d\u5bf9\u3002<\/p>\n<p>\u5411\u5217\u8868\u6dfb\u52a0\u5143\u7d20\u5e76\u518d\u6b21\u6dfb\u52a0\u81f3\u6620\u5c04\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kd\">private<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">mapTask07<\/span><span class=\"o\">()<\/span> <span class=\"o\">{<\/span>\r\n\t<span class=\"nc\">Map<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">String<\/span><span class=\"o\">,<\/span> <span class=\"nc\">List<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;&gt;<\/span> <span class=\"n\">map<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">HashMap<\/span><span class=\"o\">&lt;&gt;();<\/span>\r\n\t\t\r\n\t<span class=\"nc\">String<\/span> <span class=\"n\">keyStr<\/span> <span class=\"o\">=<\/span> <span class=\"s\">\"aList\"<\/span><span class=\"o\">;<\/span> \r\n\t\t\r\n\t<span class=\"c1\">\/\/\u914d\u5217\u3092\u4f5c\u6210\u3057\u3066\u5024\u3092\u683c\u7d0d<\/span>\r\n\t<span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">listA<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;&gt;(<\/span><span class=\"nc\">Arrays<\/span><span class=\"o\">.<\/span><span class=\"na\">asList<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">,<\/span><span class=\"mi\">2<\/span><span class=\"o\">,<\/span><span class=\"mi\">3<\/span><span class=\"o\">));<\/span>\r\n\t<span class=\"c1\">\/\/map\u306b\u914d\u5217\u3092\u683c\u7d0d\u3059\u308b\u3002<\/span>\r\n\t<span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"n\">keyStr<\/span><span class=\"o\">,<\/span> <span class=\"n\">listA<\/span><span class=\"o\">);<\/span>\r\n\t\t\r\n\t<span class=\"c1\">\/\/\u30ea\u30b9\u30c8\u3078\u306e\u8981\u7d20\u306e\u8ffd\u52a0\u3068\u518d\u5ea6\u306e\u30de\u30c3\u30d7\u3078\u306e\u8ffd\u52a0<\/span>\r\n\t<span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;<\/span><span class=\"nc\">Integer<\/span><span class=\"o\">&gt;<\/span> <span class=\"n\">addList<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">ArrayList<\/span><span class=\"o\">&lt;&gt;(<\/span><span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">keyStr<\/span><span class=\"o\">));<\/span>\r\n\t<span class=\"n\">addList<\/span><span class=\"o\">.<\/span><span class=\"na\">add<\/span><span class=\"o\">(<\/span><span class=\"mi\">4<\/span><span class=\"o\">);<\/span>\r\n\t<span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">put<\/span><span class=\"o\">(<\/span><span class=\"n\">keyStr<\/span><span class=\"o\">,<\/span> <span class=\"n\">addList<\/span><span class=\"o\">);<\/span>\r\n\t\t\r\n\t<span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">map<\/span><span class=\"o\">.<\/span><span class=\"na\">get<\/span><span class=\"o\">(<\/span><span class=\"n\">keyStr<\/span><span class=\"o\">));<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u800c\u8a00\u4e4b\u6211\u5728\u7f16\u5199\u7a0b\u5e8f\u65f6\u6574\u7406\u4e86\u6709\u5173\u5217\u8868\u5b58\u50a8\u65b9\u5f0f\u7684\u5185\u5bb9\u3002 \u4f7f\u7528\u6570\u7ec4\u6765\u5b58\u50a8\u7684\u65b9\u6cd5 \u8bbe\u5b9a\u5728\u521d\u59cb\u5316\u6570\u7ec4\u65f6\u8981\u5b58\u50a8\u7684\u6570\u91cf \u5c06 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31286","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Java\u7684\u5907\u5fd8\u5f55\u3010\u6570\u7ec4\u00b7\u5217\u8868\u3011 - Blog - Silicon 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